SP-35 Colorado's Dinosaurs Download Publication Details This popular narrative with numerous figures and illustrations is written for a general audience. It includes nine chapters, selected references and an index. History of dinosaur collecting in Colorado; process of fossilization; geologic time scale, rock formations that yield dinosaurs; dinosaur types; story of three geologic periods when dinosaurs lived; current excavations; guide to tour and museums; sources. 74 pages. 84 figures. Digital PDF download. SP-35D Citations Jenkins, John T., and Jannice L. Jenkins. SP-35 Colorado’s Dinosaurs. Special Publication, SP-35. Denver, CO: Colorado Geological Survey, Division of Minerals and Geology, Department of Natural Resources, 1993. https://doi.org/10.58783/cgs.sp35.abmd2930. CGS Publications. https://coloradogeologicalsurvey.org/publications/colorado-dinosaurs/.